Inventor

WATANABE YOSHIJU

JP29 patents

⚠️ This page may combine multiple inventors who share the name “WATANABE YOSHIJU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

WATANABE YOSHIJU

HITACHI LTD

Data synchronizing signal detecting device

Information recording and reproducing method and information recording and reproducing device

Coding apparatus and coding method

Equalizer having a processing unit for selecting a coefficient out of a coefficient table

Signal processing circuit and information recording/reproducing apparatus using the same, and method for optimizing coefficients of equalizer circuit

Signal processing circuit and information recording/reproducing apparatus using the same, and method for optimizing coefficients of equalizer circuit

Data encoding method for digital data recording and data recording system using the same

Decoding apparatus and decoding method

Data synchronizing signal detecting device

Equalizer and magnetically recorded-signal reproducer

Data synchronizing signal detecting device

Signal processing method and apparatus and disk device using the method and apparatus

Data synchronizing signal detector, signal processing device using the detector, information recording and reproducing apparatus having the detector and the device, data synchronizing signal detecting method, and information recording medium for using in the method

Data synchronizing signal detecting device

Data synchronization detection device, information recording device, information reproduction device, information recording format, signal processing device, information recording and reproducing device, and information recording medium

Signal processing technique for preventing delay in read time from retry operations

Data synchronizing signal detecting device

Equalizer having a processing unit for selecting a coefficient out of a coefficient table

HITACHI GLOBAL STORAGE TECH

Data synchronizing signal detector, signal processing device using the detector, information recording and reproducing apparatus having the detector and the device, data synchronizing signal detecting method, and information recording medium for using in the method

Decoding apparatus and decoding method

Error detecting method and device, information storing and reproducing device and magnetic disk drive

Coding device and decoding device

Magnetic disk drive and magnetic disk medium

Information recording and reproducing method and information recording and reproducing device

WATANABE YOSHIJU

Disk drive including a host interface supporting different sizes of data sectors and method for writing data thereto

Data storage device and management method of cryptographic key thereof

Hard disk drive with certification function

Disk unit, magnetic disk unit and information storage unit

HITACHI VIDEO & INF SYST

Data synchronization detection method, information recording method, and information reproduction method